et in species novas atque affines divisa. 359 
-above but only glaucescent beneath, mostly oblong and abruptly acumin- 
ate, 4-6 cm long, only subsessile, or some of the more basal leaflets 
definitely petiolulate, sharply and rather closely serrate, the serratures 
10—12 on each side, even the most mature state of foliage not sub- 
coriaceous, though firm; fruiting panicle about 9 cm high, pyramidal but 
narrowly so and compact; outline of drupelets slightly inclining to 
ovate, being a trifle longer than broad, not depressed but rather acutish 
at summit. 
Open hills of the more westerly parts of Nebraska and Kansas, 
as well as probably in adjacent Colorado, if not Wyoming. The type 
specimens are in U.S. Herbarium, collected by Mr. Rydberg in Thomas 
County, Nebraska, 1883; and Mr. J. B. Norton's so-called R. glabra 
from Riley County, Kansas, collected in 1895, appears to be quite the 
same: probably even Mr. Clements' specimens from northeastern Ne- 
braska, 1893, belong here, for, while in these the foliage is larger, the 
leaflets seem to have all the marks of R. cismontana, even to the peti- 
olules, these being very evident. 
17. Rhus sambucina E. L. Greene, l. c., p. 199. 
Stem and branches unknown; leaves of few leaflets, the whole leaf, 
including the rather long petiole, little more than 2 dm long, the leaflets 
11 or 13, approximate, large, 7—10 cm long, oblong-lanceolate, acutish 
at base and subpetiolulate, the apical acumination rather abrupt and 
short, the sides with 11 or 12 quite large and sharp serratures, the 
texture of mature foliage not known, color of upper face a pale glauces- 
cent green, of the lower only paler, with nothing of the white bloom of 
real R, glabra: panicle not pyramidal even in flower, but rather oval, or 
at most oval-subpyramidal, in fruit oval, decidedly lax, the branches 
villous-pubescent; drupelets of middle size. 
Singular species, with broad short leaves made up of few and much 
serrated Jeaflets, all pale green on both faces. The locality of this is 
remote and but little known. The type specimens in Herbarium Field 
Museum, from near Piedmont, South Dakota. by Alice Pratt, June 
and August, 1895. Unfortunately only the young foliage is present; the 
one fruiting panicle was preserved only as detached from the branch; 
yet this matches perfectly, in its peculiar branching and laxity, the flower- 
ing panicles. 
In the same herbarium, are flowering specimens of what seems to 
be the same, from southern Iowa, Decatur County, T. J. Fitzpatrick, 
June 13, 1896. 
18. Rhus nitens E. L. Greene, |. c€., p. 190. 
Shrub stoutish, perhaps low, young branches and also petioles and 
lower face of foliage merely glaucescent; leaves short and short-petioled, 
the whole leaf barely 2 dm long, the petiole and rachis stout, ascending; 
leaflets 13—17, closely approximate, seldom opposite, lance-oblong, 4,5 to 
6,5 cm long, subcoriaceous, sessile by an obtuse base, the apex cuspi- 
